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A kind of high temperature anti-decarburization coating and preparation method thereof

An anti-decarburization coating and high temperature technology is applied in the field of refractory materials to achieve the effects of reducing environmental pollution, being beneficial to environmental protection and having a wide range of applications.

Active Publication Date: 2019-12-31
HENAN HUAXI FURNACE REFRACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to provide a high-temperature anti-decarburization coating and its preparation method and construction process. The technical problem to be solved is: in view of the defects in the current methods for solving the problem of decarburization of steel in the rolling process, the present invention provides a High-temperature anti-decarburization coating that can completely solve the problem of decarburization of steel during steel rolling

Method used

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  • A kind of high temperature anti-decarburization coating and preparation method thereof
  • A kind of high temperature anti-decarburization coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A high-temperature anti-decarburization coating, which is different from Example 1 in that: the coating is composed of two components A and B, and the weight percentages of the two components A and B are respectively 60% And 40%; the weight percentage composition of the A component is: high alumina bauxite powder 33%, graphite 25%, silicon carbide 15%, zirconium corundum powder 3%, Al2O3 ultrafine powder 17% and silica alumina 7%; The weight percentage composition of the B component is: 20% suspending agent and 80% binder. The rest is the same as in Example 1.

[0037] The binder is phenolic resin.

[0038] The particle size of the high alumina bauxite powder is -300 mesh; in the high alumina bauxite powder, Al 2 O 3 The mass percentage content of ≥80%, Fe 2 O 3 The mass percentage content of the bauxite powder is less than or equal to 2%, and the bulk density of the high bauxite powder is more than or equal to 2.9g / cm3.

[0039] The graphite used is T890 graphite produced b...

Embodiment 2

[0047] A high-temperature anti-decarburization coating, which is different from Example 1 in that: the coating is composed of two components A and B, and the weight percentages of the two components A and B are respectively 70% And 30%; the weight percentage composition of the A component is: high alumina bauxite powder 26%, graphite 15%, silicon carbide 35%, zirconium corundum powder 7%, Al 2 O 3 13% ultrafine powder and 4% silica-alumina glue; the weight percentage composition of the B component is: 30% suspension agent and 70% binder. The rest is the same as in Example 1.

Embodiment 3

[0049] A high-temperature anti-decarburization coating, which is different from Example 1 in that the coating is composed of two components A and B, and the weight percentages of the two components A and B are respectively 50% And 50%; the weight percentage composition of the A component is: high alumina bauxite powder 30%, graphite 20%, silicon carbide 25%, zirconium corundum powder 5%, Al 2 O 3 15% ultrafine powder and 5% silica-alumina glue; the weight percentage composition of the B component is: 25% suspending agent and 75% binder. The rest is the same as in Example 1.

[0050] When the high-temperature anti-decarburization coating of the present invention is applied, it is found that it has the advantages of strong oxidation resistance, heat resistance, good thermal shock stability, etc.; after using the high-temperature anti-decarburization coating of the present invention, a protection is formed on the surface of steel Film, reduce the depth of the decarburization layer, ...

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Abstract

The invention relates to a high-temperature decarburization-prevention coating, belonging to the technical field of fireproofing materials. The coating contains the following components by weight percent: 60%-70% of a component A and 30%-40% of a component B, wherein the component A contains the following components by weight percent: 26%-33% of high bauxite powder, 15%-25% of graphite, 15%-35% of silicon carbide, 3%-7% of fused alumina zirconia powder, 13%-17% of Al2O3 ultrafine powder and 4%-7% of aluminum silica gel; and the component B contains the following components by weight percent: 20%-30% of a suspending agent and 70%-80% of a bonding agent. According to the high-temperature decarburization-prevention coating, the decarburization problem of steel in a steel rolling process is simple, and a protection film is formed on the surface of the steel after the high-temperature decarburization-prevention coating is used, so that the depth of a decarburization layer is decreased, the product yield is greatly increased, the surface hardness of the steel is greatly increased, the use performance of the steel is greatly improved, the metal recovery rate is increased, the production cost is lowered, and the economic benefit is increased.

Description

Technical field [0001] The invention belongs to the technical field of refractory materials, and particularly relates to a high-temperature anti-decarburization coating that solves the problem of decarburization in the rolling process of carbon steel, medium carbon steel, high carbon steel, etc., and a preparation method thereof. Background technique [0002] In the long-term production process, due to the severe decarburization during the heating process before rolling and the cooling process after rolling, the fatigue strength of the steel is significantly reduced, and cracks are prone to cause fatigue fracture. [0003] According to the steel rolling production situation, there are the following types of steels that are easy to decarburize during the rolling process: [0004] 1. Bearing steel; [0005] 2. High carbon tool steel; [0006] 3. Spring steel; [0007] 4. Cord steel, etc. [0008] At present, countries around the world have not had any effective solutions to the problem of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D5/08C09D5/00C09D1/00C04B35/66C21D1/72
CPCC04B35/66C04B2235/3217C04B2235/3222C04B2235/3427C04B2235/3826C04B2235/425C04B2235/48C04B2235/5427C04B2235/5436C04B2235/5463C04B2235/77C04B2235/96C21D1/72
Inventor 姜玉毅康志斌
Owner HENAN HUAXI FURNACE REFRACTORY
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